Finding the Fourth Proportional to 1,116.83, 1,541.31 and 619.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,116.83 : 1,541.31 = 619.47 : x
2. Step 2: Convert to fraction form
   1,116.83/1,541.31 = 619.47/x
3. Step 3: Cross multiply
   1,116.83x = 1,541.31 × 619.47
4. Step 4: Simplify right side
   1,116.83x = 954,787.60
5. Step 5: Solve for x
   x = 954,787.60/1,116.83
6. Step 6: Final answer
   x = 854.91